Lewis P L, Rorabeck C H, Bourne R B
Wakefield Orthopaedic Clinic, Adelaide, S. Australia.
Clin Orthop Relat Res. 1995 Dec(321):173-7.
A comparative radiographic review of 217 cementless total knee replacements was done 4 years after surgery to look for radiographic change at the screw-bone interface. There were 102 Miller Galante I knee prostheses, 59 Miller Galante II prostheses, and 56 Anatomic Modular Knee prostheses studied. If the appearance of the screw-bone interface had changed, this was classified according to the width of the lucency. Two hundred sixty-five of the 851 screws that were studied showed some evidence of change, with 185 (21.7%) of the screws showing a cavitary appearance change. The AMK prosthesis showed the higher incidence of cystic and cavitary changes. Polyethylene debris is thought to be responsible for generation of osteolysis and the radiographic appearance change. Design of the components and particularly the polyethylene attachment mechanisms may be responsible for the differences in the frequencies of osteolysis.
对217例非骨水泥型全膝关节置换术患者在术后4年进行了X线对比复查，以观察螺钉与骨界面的X线变化。研究的假体包括102例Miller Galante I型膝关节假体、59例Miller Galante II型假体和56例解剖型模块化膝关节（AMK）假体。如果螺钉与骨界面的外观发生改变，则根据透亮区的宽度进行分类。在研究的851枚螺钉中，有265枚显示出一些改变的迹象，其中185枚（21.7%）螺钉出现空洞样外观改变。AMK假体的囊肿样和空洞样改变发生率更高。聚乙烯碎屑被认为是导致骨溶解和X线外观改变的原因。假体的设计，尤其是聚乙烯固定机制，可能是导致骨溶解发生率差异的原因。
